名词短语
中文翻译：井下开采系统
同义词：
['mining system', 'underground mining system']
例句：
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1.The company has implemented a new heading-and-stope system to improve efficiency.
该公司已经实施了一种新的井下开采系统来提高效率。
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2. The mine is equipped with advanced machinery and equipment to ensure the safety of workers.
矿井配备了先进的机器和设备，以确保工人的安全。
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3. The head of the mining department expressed his satisfaction with the new system.
矿业部门的负责人对新的系统表示满意。